Hi Sergei, On Mon, Apr 9, 2018 at 5:57 PM, Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx> wrote: > On 04/09/2018 12:46 PM, Geert Uytterhoeven wrote: >>> +static int rcar_gen3_phy_pcie_probe(struct platform_device *pdev) >>> +{ >>> + struct device *dev = &pdev->dev; >>> + struct phy_provider *provider; >>> + struct rcar_gen3_phy *phy; >>> + struct resource *res; >>> + void __iomem *base; >>> + int error; >>> + >>> + if (!dev->of_node) { >>> + dev_err(dev, >>> + "This driver must only be instantiated from the device tree\n"); >>> + return -EINVAL; >>> + } >> >> Do we need this check? Just go bang, like most other DT-only drivers do? > > You mean NULL pointer dereference? Yep. (S)he who instantiates a "phy_rcar_gen3_pcie" device without DT is bound to die. Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html